Suppose that for the couple in the figure below, you were told that the girl's mass was three-fourths that of the boy's mass. The boy has a velocity of v = 0.51 m/s to the left. What would be the girl's velocity in this case?
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Suppose that for the couple in the figure below, you were told that the girl's mass was three-fourths that of the boy's mass. The boy has a velocity of v = 0.51 m/s to the left. What would be the girl's velocity in this case? (Consider the ice to be frictionless. Enter the magnitude only.)
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- A rocket is fired vertically upward from the ground. The distance s in feet that the rocket travels from the ground after t seconds is given by s(t) = -16 t2 + 560 t. Apply calculus to find the velocity of the rocket 3 seconds after being fired. Two objects move on a horizontal frictionless surface along the same line in the same direction which we shall refer to as the forward direction. The trailing object of mass has a velocity of forward. The leading object of mass has a velocity of forward. The trailing object catches up with the leading object and the two objects experience a completely inelastic collision. By using the rule of conservation of Momentum, calculate is the final velocity of each of the two objects?Question 5: A ball of mass m collides with a wall with initial velocity -voj (and then it rebounds). The force acting on the ball by the wall during the collision is given by F = (At + Bt2)j where A and B are positive constants. Find the velocity of the ball after the collision. The ball is in contact with the wall 10-2 seconds (Assume that the gravitational force is negligible compared with force F).Consider the following question: A car moving at 10 m/s crashes into a tree and stops in 0.26 s. Calculate the force the seatbelt exerts on a passenger in the car to bring him to a halt. The mass of the passenger is 70 kg. Would the answer to this question be different if the car with the 70-kg passenger had collided with a car that has a mass equal to and is traveling in the opposite direction and at the same speed? Explain your answer.
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